Summary & Overview
CPT 21151: LeFort II Midface Reconstruction with Microsurgery and Bone Grafting
CPT code 21151 denotes LeFort II midface reconstruction using microsurgical techniques and bone grafting to correct congenital or acquired facial deformities such as Treacher Collins syndrome. This complex craniofacial procedure is clinically significant because it restores facial form and function, often requiring multidisciplinary teams and specialized hospital resources. Nationally, proper coding and coverage recognition affect access to reconstructive care and resource planning for tertiary surgical centers.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical and billing orientation to the code, typical sites of service, and what to expect in claims processing and payer interactions. The publication outlines common modifiers and payer considerations where available, summarizes relevant clinical context for surgical teams and billing staff, and highlights areas where data are not available in the input.
This summary provides health system leaders, coding professionals, and clinicians with the context needed to classify services correctly, anticipate payer engagement, and understand the role of CPT code 21151 in delivering complex craniofacial care across hospital settings.
Billing Code Overview
CPT code 21151 describes reconstruction of the midface using microsurgical techniques and bone grafting in a LeFort II osteotomy. The procedure addresses facial deformities that are congenital or acquired, including syndromic conditions such as Treacher Collins syndrome.
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Service type: Complex craniofacial reconstructive surgery involving microsurgery and bone grafting
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Typical site of service: Inpatient or outpatient hospital setting with access to operating room resources and microsurgical capability
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A typical patient is a pediatric or adult individual with congenital midface hypoplasia (for example, Treacher Collins syndrome) or acquired midfacial trauma resulting in functional and aesthetic deformity. The patient presents with malocclusion, airway compromise, ocular dystopia, or facial asymmetry. Preoperative workflow includes multidisciplinary evaluation by craniofacial/plastic surgery, maxillofacial surgery, and otolaryngology; imaging with CT facial bones for surgical planning; dental and orthodontic assessment when indicated; and preoperative anesthesia evaluation. The operative plan is a LeFort II midface advancement with osteotomies, regional or free vascularized bone grafting, and microsurgical fixation to reconstruct the infraorbital rims, maxilla, and zygomatic complex. The procedure is typically performed in an inpatient operating room setting under general anesthesia with possible postoperative ICU or step-down monitoring for airway, bleeding, and flap viability. Postoperative workflow includes pain control, airway management, flap surveillance, serial imaging as needed, nutritional support, and scheduled outpatient follow-up with surgical and dental teams for hardware assessment and orthodontic planning.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when intraoperative work is substantially greater than typical for 21151 due to complexity or extensiveness of reconstruction. |